EP1518641B1 - Marble or stone slab polishing machine provided with a rotating head mounted on a fulcrum - Google Patents

Marble or stone slab polishing machine provided with a rotating head mounted on a fulcrum Download PDF

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Publication number
EP1518641B1
EP1518641B1 EP04022153A EP04022153A EP1518641B1 EP 1518641 B1 EP1518641 B1 EP 1518641B1 EP 04022153 A EP04022153 A EP 04022153A EP 04022153 A EP04022153 A EP 04022153A EP 1518641 B1 EP1518641 B1 EP 1518641B1
Authority
EP
European Patent Office
Prior art keywords
slab
polishing machine
fulcrum
chain
head supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04022153A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1518641A1 (en
Inventor
Nicola Montresor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montresor and C SRL
Original Assignee
Montresor and C SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montresor and C SRL filed Critical Montresor and C SRL
Priority to SI200430807T priority Critical patent/SI1518641T1/sl
Priority to PL04022153T priority patent/PL1518641T3/pl
Publication of EP1518641A1 publication Critical patent/EP1518641A1/en
Application granted granted Critical
Publication of EP1518641B1 publication Critical patent/EP1518641B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/002—Grinding heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain

Definitions

  • the present invention proposes a marble or stone slab polishing machine to polish slabs made from stone, marble or the like. More particularly, the present machine is to polish the borders of slabs.
  • the main feature of this machine is the presence of a tools holding head pivoted round a fulcrum.
  • the machine according to this invention comprises a slab supporting part in which the slabs are fed on a horizontal band disposed in the front of the machine.
  • the borders of the slabs are worked by polishing tools of heads arranged on a unit that is rotated angularly and is mounted on fulcrum supports.
  • the present machine offers many important advantages. Concerning the practicalness, the working processes are simpler and there is less wear and tear in the movable parts. Concerning the construction, the present machine avoids the utilization of the conventional supporting units needed to permit an angular movement along a curved path. As is known, the said supporting units are complex and costly.
  • some of the said machines are utilized to shape and polish the borders of slabs made of granite, marble, stone and glazed materials.
  • the said machines are generally called border polishers and permit to polish the borders of slabs, for instance when it is necessary to obtain kitchen planes and shelves or surfaces provided with a toroidal border.
  • the machine is therefore equipped with components that permit the raw slab to be subjected to the roughing and polishing operations so as to obtain a perfectly polished slab border.
  • the conventional slab border polishing machines are provided with a horizontal supporting plane provided with a conveyor belt.
  • the marble or stone slab to be worked is placed on the said conveyor belt so that the slab advances progressively.
  • the working and polishing tools are represented by a series of heads. Each head is provided with a grinder.
  • the heads are arranged side by side and in parallel succession on supports that permit the heads to be displaced angularly in respect of the working centre of the slab border.
  • the head supports are normally utilized in the border polishing machines and are represented by arc guides disposed on the two ends of a bar.
  • the arc guides support suitable sliding blocks to permit an angular sliding of the bar itself. Both the sliding blocks and the arc guides are moved through independent motorized actuating systems.
  • the prior art discloses moving systems based on a series of connecting rods that permit the head unit to rotate like a four-bar linkage (see for example document EP 0197233 ).
  • the constructive structure is too complex.
  • the aim of the present invention is to eliminate the aforesaid inconveniences and in particular, to reduce the complexity of the known stone or marble working machines, specifically the slab border polishing machines, by conceiving constructive solutions that simplify the movement of the working unit so that the movement becomes more rapid and the wear and tear is reduced.
  • a slab border polishing machine according to the preamble of claim 1 is shown in document DE 4319276 .
  • the machine according to the present invention is carried out at very low costs, also the costs of upkeep and operation being low and therefore, this machine permits to obtain practical and economic advantages.
  • the machine according to the present invention is equipped with a supporting unit to support the polishing heads.
  • a slab border polishing machine is provided according to claim 1.
  • number 1 denotes a head supporting unit which supports angular rotation polishing heads.
  • the unit 1 is moved towards a slab 2 which is fed on a conveyor belt in a slab border polishing machine (not well represented for it is known).
  • the head supporting unit 1 comprises a plurality of motorized spindles provided with respective polishing tools or grinders 3 and is mounted, at its two ends, on fulcrum-type supports 4.
  • the supports 4 are horizontal shafts disposed on ball bearings.
  • the axis of the fulcrum of the supports 4 is parallel to the axis of the toroidal sector or the like of the slab 2.
  • each grinder must effect to follow the toroidal profile of the slab are effected through a pressing pneumatic device disposed on the shaft 5 of the grinder 3.
  • the grinder may be displaced along its own axis forward and backward but the grinder rests on the slab border in the whole angular movement effected by the head.
  • the utilization of the head unit fulcrum system is much simpler than the conventional complex system of support with sliding blocks arranged on arcuate guides and is made possible through means that permit to lighten the head.
  • the said means are represented by a counterbalance assembly disposed on at least one of the sides of the head supporting bar.
  • a weight 6 of a suitable calibration is supported by a cable 7 disposed on suitable pulley transmissions 8.
  • An end of the cable 7 is fixed to the rear of the head supporting unit in proximity of fixing points 9.
  • the counterbalance assembly utilizes compensation elements such as spring elements that act on the cable 7 to cause the necessary cushion of the movement.
  • the counterbalance system keeps the working head balanced with a lightening of the forces pushing the fulcrum 4. It is therefore to be noted that the utilization of the fulcrum 4, the size of which may be small, is made possible only by utilizing the system lightened by the counterbalances. Otherwise, the efforts and the thrusts of the head assembly would be excessive.
  • the movement of the head assembly is permitted by a carriage 10 which is connected with the head assembly.
  • the carriage 10 is hung among the links of a chain 11 extended on a metal arc 12.
  • the carriage 10 moves angularly along the chain 11 through the rotation of a motorized pinion 13 which acts on the chain 11 through two further idle pinions 14 which are arranged on the carriage 10.
  • the chain 11 is maintained in tension on the motorized pinion 13 by means of the two idle pinions 14 which permit the chain to be gripped.
  • the polishing head assembly is operated and the grinders 3 begin rotating to polish the slab border.
  • the angular displacing system of the polishing head assembly is operated by actuating the motorized pinion 13 so that the polishing grinders are displaced angularly in respect of the torus or other similar shape of the slab by rotating the grinders round the fulcrum 4.
  • the grinders rotate like an arc round the fulcrum or pivot 4 and are maintained under a constant pressure against the slab through a pneumatic or hydraulic thrust system which acts on the shaft 5 of each grinder. In this way, it is possible to effect a perfect complete polishing of the slab border as the slab advances.
  • the counterbalance system maintains the assembly in tension upward with a certain vertical range of the counterbalance 6 on limiting the efforts and thrusts in respect to the fulcrum 4. In this way, the wear of the fulcrum is much reduced because the structure is lightened by utilizing the counterbalances and the dragging carriage 10 hung to the chain 11, which makes possible to utilize less powerful and much lighter motors than the conventional ones.
  • the pivot 4 has a fixed position on the frame of the machine.
  • the supporting unit for the polishing heads may be assembled in a kit that may be utilized in the machines of new conception as well as in the known machines because the new system fits to any type of slab border polishing machine provided with multiple heads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP04022153A 2003-09-29 2004-09-17 Marble or stone slab polishing machine provided with a rotating head mounted on a fulcrum Expired - Lifetime EP1518641B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200430807T SI1518641T1 (sl) 2003-09-29 2004-09-17 Polirni stroj za marmornate ali kamnite plošče,opremljen z vrtljivo glavo, montirano na vrtišču
PL04022153T PL1518641T3 (pl) 2003-09-29 2004-09-17 Maszyna do polerowania płyty marmurowej lub kamiennej zaopatrzona w obrotową głowicę zamontowaną na podparciu obrotowym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000113A ITVR20030113A1 (it) 2003-09-29 2003-09-29 Macchina per la lucidatura di lastre in materiale lapideo,
ITVR20030113 2003-09-29

Publications (2)

Publication Number Publication Date
EP1518641A1 EP1518641A1 (en) 2005-03-30
EP1518641B1 true EP1518641B1 (en) 2008-05-07

Family

ID=34179369

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04022153A Expired - Lifetime EP1518641B1 (en) 2003-09-29 2004-09-17 Marble or stone slab polishing machine provided with a rotating head mounted on a fulcrum

Country Status (12)

Country Link
US (1) US7070482B2 (pt)
EP (1) EP1518641B1 (pt)
CN (1) CN100540215C (pt)
AT (1) ATE394196T1 (pt)
BR (1) BRPI0404136A (pt)
DE (1) DE602004013503D1 (pt)
ES (1) ES2305636T3 (pt)
HR (1) HRP20080269T3 (pt)
IT (1) ITVR20030113A1 (pt)
PL (1) PL1518641T3 (pt)
PT (1) PT1518641E (pt)
SI (1) SI1518641T1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115922484B (zh) * 2022-12-14 2024-04-12 西安奕斯伟材料科技股份有限公司 边缘抛光装置和边缘抛光方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197233B1 (en) * 1985-03-12 1988-08-10 C.M.P.I. S.n.c. di De Toni Apollinare & C. A machine for working circular profile edges of slabs of marble, granite, and the like
IT1206932B (it) * 1987-05-22 1989-05-11 Marmo Meccanica Spa Meccanismo per il supporto e la movimentazione della tavola portautensili nelle macchine automatiche per la lucidatura dei bordi arrotondati di lastre di marmo,granito e simili
DE3916775A1 (de) * 1989-05-23 1990-11-29 Fickert Kg Vorrichtung zum herstellen von rundprofilen an eingespannten werkstuecken
IT1257044B (it) * 1992-06-12 1996-01-05 Giovanni Faccioli Procedimento automatico di lucidatura delle coste piane di lastre in marmo, pietra granito ed affini, e dipositivo per la messa in opera ditale procedimento
IT1257688B (it) * 1992-11-20 1996-02-01 Sistema per lo spostamento su tre assi della barra porta frese di macchine per la lucidatura di coste in materiale lapidei o similari

Also Published As

Publication number Publication date
PL1518641T3 (pl) 2008-10-31
BRPI0404136A (pt) 2005-05-24
ES2305636T3 (es) 2008-11-01
SI1518641T1 (sl) 2008-10-31
US7070482B2 (en) 2006-07-04
DE602004013503D1 (de) 2008-06-19
ATE394196T1 (de) 2008-05-15
PT1518641E (pt) 2008-06-12
CN100540215C (zh) 2009-09-16
US20050070213A1 (en) 2005-03-31
EP1518641A1 (en) 2005-03-30
HRP20080269T3 (en) 2008-07-31
ITVR20030113A1 (it) 2005-03-30
HK1076269A1 (zh) 2006-01-13
CN1605432A (zh) 2005-04-13

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